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cwrw238

5 years ago

I cant do do number 4 as I dont know exactly how the magnitude of an earthquake is defined. If it were a simple proportional relationship the answer would be 6.7 / 5.1 but none of the options are close to that..

cwrw238

5 years ago

I suppose logs are involved as all these questions are about logs.

cwrw238

5 years ago

yep - they are logs to the base 10 by the look of it
so we have:
10^6.7 / 10 ^ 5.1 = 10^(6.7 - 5.1) = 10^1.6